Continuous ion exchange technology for removing inorganic salt and adopted system

Abstract

The invention discloses a continuous ion exchange technology for removing inorganic salt. The continuous ion exchange technology comprises the following steps: pumping raw materials into a resin column system in continuous moving through a raw material tank, wherein the resin column system is provided with a plurality of resin columns, the resin columns are sequentially arranged according to sequence numbers, the resin columns rotate along a number decreasing direction, every stepping is in two column space, the resin columns in even numbers are internally filled with cation resin and form a cation removing system, and the resin columns in odd numbers are internally filled with anion resin and form an anion removing system; enabling the raw materials to enter the resin column system through the cation removing system, then entering a buffer tank after cation removing, then pumping the raw materials into the anion removing system, and enabling feed liquid after anion removing to enter aproduct tank. The invention also discloses a system adopted by the continuous ion exchange technology. The continuous ion exchange technology disclosed by the invention can replace a traditional stationary bed technology, the purpose of efficiently applying resin can be achieved, the using amount of the resin, water and a reclaiming agent can be reduced, wastewater emission can be reduced, two different types of resin can be integrated into a set of system, and the technology is simplified.

Description

Technical field [0001] The invention relates to the technical field of chemical engineering, in particular to a continuous ion exchange process for removing inorganic salts and an adopted system. Background technique [0002] In the production process of a variety of food additives (such as amino acids, sugars, organics, etc.) and pharmaceuticals, it is often necessary to remove inorganic salts from products. In traditional processes, fixed beds of anion and cation resins are often used to remove inorganic salts. Ions are removed by adsorption. However, the traditional fixed bed has disadvantages such as large area, large investment in equipment, low utilization rate of ion exchange resin, and large amount of waste water. Summary of the invention [0003] In view of the above-mentioned problems, the purpose of the present invention is to provide a continuous ion exchange process for inorganic salts with a small footprint, compact equipment, high resin utilization rate and low was...

AI Technical Summary

Problems solved by technology

However, the traditional fixed bed has the disadvantages of large floor area, large investment in equipment, low utilization rate of ion exchange resin, and large amount of wastewater.

Images